.booking-system {
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  }
  
  /* 顶部标题栏 */
  .header-bar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(102, 126, 234, 0.3);
  }
  
  .header-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
  }
  
  .header-bar h1 {
    margin: 0;
    font-size: 18px;
    font-weight: bold;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
  }
  
  /* 内容区域 */
  .content-area {
    flex: 1;
    overflow-y: auto;
    padding: 0;
    margin-bottom: 70px;
  }
  
  /* 当在详情页或预约页时移除底部间距 */
  .content-area.no-bottom-nav {
    margin-bottom: 0;
  }
  
  /* 底部导航栏 */
  .bottom-navigation {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: white;
    display: flex;
    border-top: 1px solid #e0e0e0;
    z-index: 1000;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
  }
  
  .nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 3px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 0; /* 确保文字可以收缩 */
  }
  
  .nav-item:hover {
    background-color: #f5f5f5;
  }
  
  .nav-item.active {
    color: #667eea;
  }
  
  .nav-icon {
    font-size: 18px;
    margin-bottom: 3px;
  }
  
  .nav-text {
    font-size: 11px;
    font-weight: 500;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
  }
  
  /* 移动端适配 */
  @media (max-width: 768px) {
    .header-bar {
      padding: 10px 15px;
    }
    
    .header-bar h1 {
      font-size: 16px;
    }
    
    .nav-item {
      padding: 6px 2px;
    }
    
    .nav-icon {
      font-size: 16px;
      margin-bottom: 2px;
    }
    
    .nav-text {
      font-size: 10px;
    }
  }

  /* 超小屏幕适配 */
  @media (max-width: 480px) {
    .nav-item {
      padding: 5px 1px;
    }
    
    .nav-icon {
      font-size: 14px;
      margin-bottom: 1px;
    }
    
    .nav-text {
      font-size: 9px;
    }
  }